Zach Grenier and Jennifer Ehle have landed guest spots on the rookie NBC drama, The Hollywood Reporter has learned exclusively.

Grenier, best known for playing the sardonic David Lee on CBS' The Good Wife, will drop by as Novak, who works under the front of a taxidermy workshop but actually deals with an underworld of rare and exotic antiques.

Ehle, who next appears in features Robocop and Fifty Shades of Grey, will play Madeline Pratt, the second female "Blacklister." Her character is described as a formidable businesswoman who has a past with Red Reddington (James Spader).

Both will appear in the 13th episode, titled "Madeline Pratt (No. 73)."

Grenier, who remains a regular on The Good Wife, is repped by Stone Manners Salners. Ehle is repped by ICM Partners and Independent Talent Group.